External Form of the Infrapalpebral Sulcus on a Male Head

Description

Seen on the inferior palpebra of an adult male, the infrapalpebral sulcus forms a shallow curvilinear groove immediately inferior to the lower eyelid margin and superior to the malar (zygomatic) cheek skin. Medially it approaches the region of the medial canthus near the lacrimal sac area, then tracks laterally toward the lateral canthus as it arcs across the lid cheek junction. Superficial skin topography is the focus, but the contour reflects underlying relationships between the orbicularis oculi, the orbital septum and malar fat compartments that sit inferior and lateral to the orbital rim. A small landmark. Surface definition of the infrapalpebral sulcus matters in periocular assessment because it helps distinguish normal lid cheek anatomy from pathologic edema, post-traumatic contour change, and age-related tear trough deformity that deepens along the nasojugal region. Clinicians often reference this crease when planning lower blepharoplasty or fat repositioning, where the plane between orbicularis oculi and the suborbicularis oculi fat and the proximity of the infraorbital foramen (inferior to the orbital rim on the anterior maxilla) guide safe dissection and avoidance of infraorbital nerve dysesthesia. The male pattern of thicker dermis and different malar fat distribution can alter how the sulcus reads clinically, which is useful when comparing to female or pediatric references. Use this illustration for teaching external anatomy of the face in head and neck gross anatomy, surface anatomy, and oculoplastic modules where learners must name and localize periocular landmarks accurately. It also suits figure plates for aesthetic surgery texts, dermatology atlases discussing periorbital aging, and patient-facing procedural guides that need correct terminology without overpromising outcomes. Anatomical accuracy verified by SciePro's Medical Advisory Board.